[material_ui] Remove widgets/ import in flexible_space_bar_test.dart, app_bar_sliver_test.dart and partial fix in chip_test.dart - #12004

[material_ui] Remove widgets/ import in flexible_space_bar_test.dart, app_bar_sliver_test.dart and partial fix in chip_test.dart#12004

auto-submit[bot] merged 1 commit into

flutter:mainflutter/packages:mainfrom

QuncCccccc:enable_flexible_space_app_bar_sliver_testsQuncCccccc/packages:enable_flexible_space_app_bar_sliver_testsCopy head branch name to clipboard